From dee2ac9dacf96940b5f55f4f1e54e550e28101da Mon Sep 17 00:00:00 2001
From: Kagami Sascha Rosylight <saschanaz@outlook.com>
Date: Fri, 16 Oct 2020 00:59:21 +0200
Subject: [PATCH] Remove never-supported Budget APIs

---
 api/BudgetService.json              |  84 ------------------
 api/BudgetState.json                | 129 +---------------------------
 test/linter/test-support-history.js |  55 ++++++++++++
 3 files changed, 56 insertions(+), 212 deletions(-)
 create mode 100644 test/linter/test-support-history.js

diff --git a/api/BudgetService.json b/api/BudgetService.json
index 67b708e3f8278b..16f5f0b6a073d6 100644
--- a/api/BudgetService.json
+++ b/api/BudgetService.json
@@ -46,90 +46,6 @@
           "deprecated": true
         }
       },
-      "getBudget": {
-        "__compat": {
-          "mdn_url": "https://developer.mozilla.org/docs/Web/API/BudgetService/getBudget",
-          "support": {
-            "chrome": {
-              "version_added": false
-            },
-            "chrome_android": {
-              "version_added": false
-            },
-            "edge": {
-              "version_added": false
-            },
-            "firefox": {
-              "version_added": false
-            },
-            "ie": {
-              "version_added": false
-            },
-            "opera": {
-              "version_added": false
-            },
-            "opera_android": {
-              "version_added": false
-            },
-            "safari": {
-              "version_added": false
-            },
-            "samsunginternet_android": {
-              "version_added": false
-            },
-            "webview_android": {
-              "version_added": false
-            }
-          },
-          "status": {
-            "experimental": true,
-            "standard_track": false,
-            "deprecated": true
-          }
-        }
-      },
-      "getCost": {
-        "__compat": {
-          "mdn_url": "https://developer.mozilla.org/docs/Web/API/BudgetService/getCost",
-          "support": {
-            "chrome": {
-              "version_added": false
-            },
-            "chrome_android": {
-              "version_added": false
-            },
-            "edge": {
-              "version_added": false
-            },
-            "firefox": {
-              "version_added": false
-            },
-            "ie": {
-              "version_added": false
-            },
-            "opera": {
-              "version_added": false
-            },
-            "opera_android": {
-              "version_added": false
-            },
-            "safari": {
-              "version_added": false
-            },
-            "samsunginternet_android": {
-              "version_added": false
-            },
-            "webview_android": {
-              "version_added": false
-            }
-          },
-          "status": {
-            "experimental": true,
-            "standard_track": false,
-            "deprecated": true
-          }
-        }
-      },
       "reserve": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/BudgetService/reserve",
diff --git a/api/BudgetState.json b/api/BudgetState.json
index 977e1efe59a272..79c00333a7a19d 100644
--- a/api/BudgetState.json
+++ b/api/BudgetState.json
@@ -1,130 +1,3 @@
 {
-  "api": {
-    "BudgetState": {
-      "__compat": {
-        "mdn_url": "https://developer.mozilla.org/docs/Web/API/BudgetState",
-        "support": {
-          "chrome": {
-            "version_added": false
-          },
-          "chrome_android": {
-            "version_added": false
-          },
-          "edge": {
-            "version_added": false
-          },
-          "firefox": {
-            "version_added": false
-          },
-          "ie": {
-            "version_added": false
-          },
-          "opera": {
-            "version_added": false
-          },
-          "opera_android": {
-            "version_added": false
-          },
-          "safari": {
-            "version_added": false
-          },
-          "samsunginternet_android": {
-            "version_added": false
-          },
-          "webview_android": {
-            "version_added": false
-          }
-        },
-        "status": {
-          "experimental": true,
-          "standard_track": false,
-          "deprecated": true
-        }
-      },
-      "budgetAt": {
-        "__compat": {
-          "mdn_url": "https://developer.mozilla.org/docs/Web/API/BudgetState/budgetAt",
-          "support": {
-            "chrome": {
-              "version_added": false
-            },
-            "chrome_android": {
-              "version_added": false
-            },
-            "edge": {
-              "version_added": false
-            },
-            "firefox": {
-              "version_added": false
-            },
-            "ie": {
-              "version_added": false
-            },
-            "opera": {
-              "version_added": false
-            },
-            "opera_android": {
-              "version_added": false
-            },
-            "safari": {
-              "version_added": false
-            },
-            "samsunginternet_android": {
-              "version_added": false
-            },
-            "webview_android": {
-              "version_added": false
-            }
-          },
-          "status": {
-            "experimental": true,
-            "standard_track": false,
-            "deprecated": true
-          }
-        }
-      },
-      "time": {
-        "__compat": {
-          "mdn_url": "https://developer.mozilla.org/docs/Web/API/BudgetState/time",
-          "support": {
-            "chrome": {
-              "version_added": false
-            },
-            "chrome_android": {
-              "version_added": false
-            },
-            "edge": {
-              "version_added": false
-            },
-            "firefox": {
-              "version_added": false
-            },
-            "ie": {
-              "version_added": false
-            },
-            "opera": {
-              "version_added": false
-            },
-            "opera_android": {
-              "version_added": false
-            },
-            "safari": {
-              "version_added": false
-            },
-            "samsunginternet_android": {
-              "version_added": false
-            },
-            "webview_android": {
-              "version_added": false
-            }
-          },
-          "status": {
-            "experimental": true,
-            "standard_track": false,
-            "deprecated": true
-          }
-        }
-      }
-    }
-  }
+  "api": {}
 }
diff --git a/test/linter/test-support-history.js b/test/linter/test-support-history.js
new file mode 100644
index 00000000000000..fc1361cc65cd8e
--- /dev/null
+++ b/test/linter/test-support-history.js
@@ -0,0 +1,55 @@
+const chalk = require('chalk');
+const { Logger } = require('./utils.js');
+
+/**
+ * @typedef {import('../../types').Identifier} Identifier
+ */
+
+/**
+ * @param {Identifier} data
+ */
+function hasNeverSupported(data) {
+  return Object.values(data.__compat.support).every(
+    c => !Array.isArray(c) && c.version_added === false,
+  );
+}
+
+/**
+ * @param {Identifier} data
+ * @param {Logger} logger
+ */
+function checkSupport(data, logger, path = []) {
+  if (data.__compat && hasNeverSupported(data)) {
+    logger.error(chalk`{red No support history in ${path.join('.')}}`);
+    return false;
+  }
+  for (const member in data) {
+    if (member === '__compat') {
+      continue;
+    }
+    if (!checkSupport(data[member], logger, [...path, member])) {
+      delete data[member];
+    }
+  }
+  return true;
+}
+
+/**
+ * @param {string} filename
+ * @returns {boolean} If the file contains errors
+ */
+function testSupportHistory(filename) {
+  /** @type {Identifier} */
+  const data = require(filename);
+
+  const logger = new Logger('Support history');
+
+  checkSupport(data, logger);
+
+  require("fs").writeFileSync(filename, JSON.stringify(data, null, 2) + "\n");
+
+  logger.emit();
+  return logger.hasErrors();
+}
+
+module.exports = testSupportHistory;